Winding device for wiping webs of embossing printing-machines



E. M. LOCKWOOD. WINDING DEVICE FOR WIPING WEBS 0F EMBOSSING PRINTINGMACHINES.

' APPLICATION FILED JUNE 26.1917. 1,810,195., Patented July 10, 1919.

3 SHEETS-SHEET1 ii In vendor W iiness wtlorn e11 E M. LOCKWOOD. wmomeDEVICE FOR WIPING WEBS 0F EMBOSSING PRINTING MACHINES. 1,310,195.

In V6)? for 3 SHEETS-SHEET 2.

Patented July 15, 1919.

Wines;

an orn e11 UNITED STATES PAT EDWARD M. LOCKWOOD, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR TO C. R. CARVER COMPANY, A CORPORATION OFPENNSYLVANIA.

WINDING DEVICE FOR WIPING WEBS OF EMBOSSING PRINTING-MACHINES.

Specification of Letters Patent.

Patented July 15, 1919.

Application filed June 26, 1917. Serial No. 176,991.

To all whom it may concern Be it known that I, EDWARD M. LOOK- WOOD, acitizen of the United States, and resident of Philadelphia, county ofPhiladelphia, and State of Pennsylvania, have invented an Improvement inWinding .Devices for Wiping Webs of Embossing Print ing-Machines, ofwhich the following is a specification.

The object of my invention is to improve the details of an embossingprinting press in which the surplus ink is removed from the die by meansof a web of paper which is intermittently fed in such manner as'topresent a fresh paper wiping surface to the die after each inkingthereof; and my improvements are particularly directed to the means forfeeding wiping web and winding it into a roll upon a detachable mandrel.

More particularly, my object is to provide an efiicient means forwinding the used wiping web upon a mandrel with a speed commensuratewith the requirements of the machine and whereby the paper roll iseasily removed from the mandrel when full; the mechanism being soconstructed that the tension under which the paper Web is rewound issubstantially uniform and predetermined.

With these and other objects, hereinafter set out, in view, my inventionconsists of certain constructions and combinations of parts fullydescribed in the following specification and more particularly definedin the claims.

My invention will be better understood by reference to the-accompanyingdrawings, in which Figure 1 is an elevation of an embossing printingpress embodying my improvements, with the belt wheel removed; Fig. 2 isa sectional elevation of the same; Fig. 3 is a sectional plan view (online mm of Fig. 4) of the means for rewinding the usedwiping web; Fig. 4is an elevation of a portion of the same; Fig. 5 is a cross section ofthe mandrel body; andlFig. 6 is an end view of the mandrel.

The general construction of embossing printing presses having automaticwiping devices is well known in the art, but for imparting a betterunderstanding of my improvements therein. I have shown in Figs. 1 and 2the details or operative parts of such a machine, and will now brieflydescribe the same. 2 is the main frame,'3 is the stamping plunger and isadapted to be operated by the usual cam and toggle mechanism, and 4 isthe die carriage and die secured thereon. The die carriage isreciprocated horizontally, from the position shown, backward under thewiper pad 15 and to a position to receive ink by the ink applying roller9, and thence forward again to the impression position shown. When thedie is moved backward to receive ink, the wiper frame and pad 15 areraised so that the paper wiping web 14 does not touch the die; but whenthe die has been inked and moved forward, the wiper pad 15 is moveddownward into wiping position for pressing the paper web 14 into contactwith the die as it passes beneath, for causing the surplus ink upon itssurface to be wiped off upon the web so as to leave the die clean exceptfor the ink in the engraved grooves, as in intaglio printing. Thecarriage and die 4 are reciprocated by the rocking lever 5 and links 6,6, jointed together at 7, one of the links being hinged to the carriageand the other to the lever 5. The hinge 7 has guide rollers whichtraverse the guideway 8, so that the links fold at the termination ofthe oscillation of the lever 5 to give a dwell to the carriage and dieduring the printing or embossing operation. The inking roller is carriedby levers 10 which are rocked by suitable means operated from the mainshaft 34, said means comprising a bell crank 10 having one arm connectedwith the levers 10 by a link 10 and having the other arm connected to alink or bar 10, which is operated by a cam 10' secured to the main shaft34. Infact, all of the power emanates from this main shaft, but it willnot be necessary to describe in detail the several instrumentalitiesemployed, as these may be of any suitable construction so far as theutility of my invention is concerned. The lever 5 which operates thecarriage is oscillated by a link 44, which is hinged to a rocker arm 43secured to a rock shaft 40 also having an arm 41 which is connected by alink 42 to a crank pin on the main driving gear 34 secured to the shaft34.

The means for raising and lowering the wiping pad is shown in Figs. 1and 2. and comprises a rocking lever 29 having at one end a link 30which carries the wiping frame and pad. 15, said lever having at its andwhen the wiper pa other end connection with a power applying rod 32guided at its upper end by the shaft 34. The rod 32 has a roller 33working in a cam groove 31 of a cam secured to the said main shaft 34.This means reciprocates the wiping frame and pad at properly timedintervals, as will be understood.

The wiping Web is of paper and wound 1n a roll 16, supported so as to beunwound therefrom as required. A friction strap 16*, weighted at-16",applies a braking action to prevent spinning under the intermittentpull. The web 14 passes from the roll 16 over guide 17, thence betweenthe rolls 18, thence over guide roll 19 on the wiper frame, thence underthe wiper pad 15, thence upward and over the solvent appl ing roller 20,thence under the guide 26 to t e winding mandrel 27. The mandrel 27 isintermittently driven to properly feed the web through the machine insuch manner that it is fed when the embossin is not taking place is outof action. The solvent roll 20 may be supplied with solvent from atrough 39 in any suitable manner, that shown being suitable rollers 35which may be oscillated to deliver to the surfaces of the roller 20 thenecessary quantity of solvent. It is however immaterial to my inventionas to What particular details are employed in the general makeup of theoperating parts of the machine.

I will now describe the means for feeding the wiping web. As beforestated, this is accomplished by imparting rotary motion to a mandrel 27upon which the paper web is wound after being employed in wiping the inkfrom the die. The construction of the mandrel is best shown in Figs. 3to 6 inclusive, and its position in the organized machine is shown inFigs. 1 and 2. The mandrel proper, upon which the paper web is wound, isa slotted cylinder 52, one end fitting a groove 51 on a head secured toa shaft 50*, andhaving the other end received in a groove in anadjustable head 53 slidably mounted on the shaft 50 and clamped thereonby screw 54. When the screw 54 is loosened, the head 53 may be slippedoff and slotted tube 52 removed.

Fig. 5 shows the cross section of the tube,-

a portion of the slot 52 being turned outward to form a binding shoulderfor looking the web to. the mandrel 2 when rotated. The head 50 has arecessed central bearing 50 on its outer end, and this is surrounded bya square hub 50, as shown in Figs. 3 and 6. The square end 50 fitsbetween the parallel lugs 61 on the driven disk and extending throughand keyed to the disk 60 at 76 is the shaft 74 having the extending end75 forming a central bearing for the recess 50 in the head 50. Inattaching the mandrel in position, the head 50 is placed upon the end 75and with the square hub 50 between the lugs 61, and then the free.

end of the shaft 50 is dropped into the open bearing 56 on the mainframe of the machine. The shaft 50 is shouldered so that its head 50 isheld up to its connection with the parts 61 and 75 of the disk 60. Whenin position the end of the web 14 is thrust through the slot 52 and acouple of wrapping turns are made about the mandrel, and the attachmentis accomplished.

The disk is sleeved within a frame 59 which is held rigidly by a stud 58extending from the bracket 57 attached to the main frame of the machine.The frame 59 has ratchet means to prevent the disk 60 and its shaft 74rotating backward and said ratchet means comprises roller 62 in camgrooves 62 and pressed into frictional contact with the disk by follower63 and coil springs 64. In this way, the disk may rotate forward (as perarrow Fig. 4), but cannot be moved backward. By use of roller clutchesin place ofratchet teeth, forward motions of any degree may be.obtained, and all backward movements of the wiping web prevented,thereby enabling the exact quantity of paper web required to be fed ateach wiping operation may be insured and all waste by inaccurate feedingavoided.

The bracket 57 is provided with a long bearing 69 in which is journaleda sleeve 65 carrying at one end a disk 65 faced with leather 66 andhaving itsother end provided with a collar 65 to prevent longitudinalmotion in the bearing. The shaft 74 of the disk 60 is journaled in thesleeve 69 and by as in applyingthe paper web to the mandrel and takingup the surplus web to start the tension thereon.

67 is a sprocket wheel and is secured to the disk 65 of the sleeve 65*;and for rigidity, this sprocket wheel is provided with a wide hubjournaled upon the outside of the hearing 69 as indicated at' 67 Thesprocket wheel 67 is driven by a sprocket chain 68 and suitableoperative means therefor whereby it is given an intermittent action. Inmachines of this class, the power transmit ting connections are of sucha nature that an intermittent motion is imparted to the chain 68, sothat the Winding mandrel for the wiping web is also given anintermittent rotation. The means shown for imparting this intermittentmotion to the sprocket chain 68 may consist of the followinginstrumentalities. The feeding roller 18 (Fig. 2) is given anintermittent rotation by a pawl and ratchet device (Fig. 1). The roller18 is provided with a ratchet wheel 24 which is intermittently rotatedby a pawl 24 carried ward to receive ink the pawl and ratchet device isoperated to rotate the roller 18 for feeding the wiping web- 14 and thesame action ope-rates the sprocket chain 68 .to impart an intermittentrotation to the mandrel for taking u the surplus web which has thus beenprovided. This feeding action takes place when the carriage isapproaching the inking means and the operation is so timed that thepaper web is held against feeding during the return of the carriage andits inked die so that the latter may be wiped clean as before explained.The chain 68 being driven from the intermittently operated roller 18,gives to the mandrel operating disk 65 a partial rotation, and thisthrough friction surface 66 gives a like motion to the disk 60 togetherwith the mandrel 27 This action winds up a given length of the web 14 todraw a clean surface thereof under the wiping pad 15. This having beendone, and the carriage and die 4 having been moved under the wiping pad(but without touching the web) to a position to receive ink from theroller 9 when moved forward, the wiping pad 15 is moved downwardly bythe action of cam 31 (Fig. 1), and'the carriage and die 4 moving forwardcause the die to wipe its inked surface upon the under surface of theweb 14 below the said wiping pad 15 as before stated. While thisoperation is taking place, there will be a back pulling upon the web 14by the action of the moving die, and this is resisted by the clutchrollers 62 holding the disk 60 and the mandrel 27 against any backwardrotation; and consequently, as there is no lost motion, only suflicientpaper web is required to be fed forward at each operation as willperform proper wiping. It will be evident that if there was no clutchmeans for directly controlling the mandrel to prevent its backwardrotation. the lost motion in the chain 68 and the ratchet mechanism ofthepower transmitting connections will permit objectionable backmovement, which should be prevented and is prevented by my presentimprovement. I

The extent of friction between the disks and 60 may be made to suit therequirements by adjusting the tension of spring 71 by nut 72, but thisfriction is only. required to be ufficient to feed the paper web at atime when the wiping strain is not occurring, and in such manner that anefficient feeding operation is insured.

' The employment of a suitable back clutch mechanism between the drivingmeans of the mandrel and the mandrel itself or its immediate supportingmeans, to prevent any back movement'of the web by reversed motion of themandrel, is very important to the effective operation of the machine ofthe class here described, and this improvement constitutes an importantfeature of my invention.

I have heretofore referred to the general character of the embossingprinting press herein described as being of a general character incommercial use, and the general construction shown, other than theimprovements forming the subject matter of the present application, willbe found fully illustrated and described in Letters Patent No.1,102,770, granted to me on July 7, 1914.

While I have described my improvements in the form which I have employedconi- .mercially and found well suited to the requirements of theinvention, nevertheless I do not confine or restrict myself to thedetails, as these are susceptible of modifications and changes withinthe scope of me chanical skill without departing from the spirit of theinvention.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A mandrel for winding a web and feeding it in an intermittent manner,co1nbined with means for operating the mandrel comprising a driven diskwith which the mandrel is detachably engaged, a friction clutchmechanism to !prevent the driven disk rotating backward, a driving diskfrictionally engaging the driven disk for driving it, and means forimparting motion to the driving disk.

2. A mandrel for winding a web and feeding it in an intermittent manner,combined with means for operating the mandrel comprising a driven diskwith which the mandrel is detachably engaged, a friction clutchmechanism to prevent the driven disk rotating backward, a driving diskin termittently driven in one direction only frictionally engaging thedriven disk for driving said driven disk, spring devices 'for adjustingthe pressure of the frictional engagement between the driving and drivendisks, and means for imparting intermittent mqtion to the driving diskin one direction on y.

3. A mandrel for winding a web and feeding it in an intermittent manner,combined with means for operating the mandrel GOIllprising a driven diskwith which the mandrel is detachably engaged, a clutch mechanism toprevent the driven disk rotating backward consisting of a stationaryframe surrounding the perimeter of the driven disk and having cam-shapedpockets with roller clutches in said pockets and springs to hold theroller clutches in constant engagement with the cam portions of thepockets and perimeter of the driven disk, a driving disk frictionallyengaging the driven disk and intermittently driven in the same directionfor driving the driven disk, and means for imparting intermittent motionto the driving disk.

4. A mandrel comprising a slotted tube, combined With a shaft extendingaxially through the tube and having an annularly grooved head fixedthereon and in the groove of which one end of the tube is received andcentered concentrically to the shaft, an adjustable head slidablymounted upon the shaft and also provided with an annular groove in whichthe other end of the tube is received and detachably clamped, acontinuouslyrotating shaft in axial alinement with the mandrel shaft,and a disk frictionally driven by the continuously rotating shaft, saiddisk having a central bearing and engaging the annularly grooved headwhich is fixed to the mandrel shaft and also having projecting portionswhich engage the said head to detachably couple with the same and rotateit.

5. Means for operating a wiping web of a printing press, consistin of amandrel u on which-the web is woun combined wit a fixed bearing, asleeve journaled in the bearing and having a driving disk, a sprocketwheel journaled upon the outside of the bearing and secured to the diskto rotate it, means for intermittently driving the sprocket wheel in onedirection only, a driven disk for operating the mandrel frictionallydriven by the driving disk and having a shaft extending through andhaving a bearing in the sleeve, a spring about the shaft to yieldinglypress the two disks together, friction clutch means to permit the drivendisk to rotate in one direction only.

6. Means for operating a wiping web of a printing press, consisting of amandrel upon which the web is wound, combined with a fixed bearing, asleeve journaled in the bearing and having a driving disk, a sprocketwheel journaled upon the outside of the bearing and secured to the diskto rotate it, means for intermittently driving the sprocket wheel in onedirection only, a driven disk for operating the mandrel frictionallydriven by the driving disk and having a shaft extending through andhaving a bearing in the sleeve, a spring about the shaft to yieldinglypress the two disks together, an inclosing fixed frame having a circularopening in which the driven disk is located said frame having cam-shapedpockets, roller clutches in said pockets and constantly rest-- ing incontact with the perimeter of the driven disk, a spring to press theroller continually in contact with the cam surface and disk whereby itis constantly in clutching relation, and a detachable connection betweenthe mandrel and driven disk.

In testimony of which invention, I hereunto set my hand.

EDW. M. LOGKWOOD.

Witnesses:

R. M. HUNTER, E. W. SMITH.

